The ECA463P1B40BM from ECHO Microwave is a Band Pass Filter with Frequency 462.97 to 463.10 MHz, Insertion Loss 1 dB, Rejection 40 dB @ 460.605 MHz, Ripple 0.5 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA463P1B40BM can be seen below.